Rescuers have pulled over 100 survivors from the rubble of a collapsed factory in Lahore, Pakistan, and are searching for dozens of others believed to be still trapped, in a disaster that has killed at least 19. It is unclear how many people were in the building when it collapsed or how many - dead or alive - may still be trapped. Survivors said the factory's owner, who was adding a third floor, had ignored advice from his contractor and pleas from workers to stop construction after cracks in the walls appeared following an earthquake last week. The 7.5-magnitude quake killed over 300 people in Pakistan and Afghanistan.